package com.neu.servlet.wty;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

@WebServlet(name = "checkNullServlet", urlPatterns = {"/checkNullServlet.do"})
public class checkNullServlet extends HttpServlet {
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        System.out.println("进入");
        String cangku=request.getParameter("cangku");
        System.out.println(cangku);
        boolean flag=false;
        if (cangku.length()==0){
            flag=true;
            request.getSession().setAttribute("flag",flag);
            response.sendRedirect("test.jsp");
        }else {
            request.getSession().setAttribute("flag",flag);
            response.sendRedirect("test.jsp");
        }
    }

    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        doPost(request, response);
    }
}